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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $1,074,891,131 | 6,663,731 | 6,663,731 |
| 2006 | $1,122,937,384 | 5,875,514 | 5,875,514 |
| 2007 | $4,739,870,102 | 6,326,450 | 6,326,450 |
| 2008 | $4,675,502,991 | 6,041,593 | 6,041,593 |
| 2009 | $3,736,900,720 | 4,563,227 | 4,563,227 |
| 2010 | $3,120,109,829 | 3,863,351 | 3,863,351 |
| 2011 | $2,302,069,397 | 2,749,433 | 2,749,433 |
Note: Quantity represents Weight in kilograms
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